Assembling machine



May 29, 1928.

N. H. KNOWLTON ASSEMBLING MACHINE Filed Dec. 6. 1919 6 Sheets-Sheet lMay 29, 1928.

N. H. KNOWLTON ASSEMBLING MACHINE e sheets-sheet 2 Filed Dec. 6, 1919May 29, 1928.

v .Y 1,671,430 N. H. KNowLToN AS SEMBLING MACHINE Filed Dec. 6, 1919 6Sheets-Sheet 5 May 29. 1928.

`N. H. KNowLToN `SSEMBLING? MACHINE Filed Dec. e. 1919 Fi Q14.

6 Sheets-Sheet 4 May 29, 1928. 1,671,430

. N. H. K NowLToN AssEMBLING MACHINE .Filed Deo. s, 1919 V 5 sheetssheez 5 f/V v01/7m:

Patented May Z9, 1928.

[Unirse stares SHOE MACHINERY CORPORATON, OF PATERSON, NEW

0F NEW JERSEY.

`Assai/IBLrive MACHINE. y

NCRV/'OOD H. KNOWLTON, 0F ROCKPORT, MASSACHUSETTS, lASSIGLI'O-t TOUNITED JERSEY, A CORPORATION Application med Legemeer e, 1919. seriaiNo; :afi'aassjv This invention relates to machinesfor operating on bootsand shoes and particularly to machines for assembling parts of boots andshoes upon their lasts preparatory to the pulling over and lastingoperations. For the purpose of illustration an embodiment of theinvention is herein shown as appliedl to a machine of the type disclosedand claimed in United States Letters Patent No. 1,356,- 510, grantedOctober 26, 1920, on application of Ori-ell Ashton; No. 1,443,288,granted January 23, 1923, on application of W. C. Stewart; and in No.1,5a1,823,'granted J une 16, 1925, on my vprior application.

Anv objecty of this invention is to vimprove and perfect machines ofthis type While retaining all the valuable'and desirable featuresdisclosed in the above-mentioned Letters Patent. l

lVIachines of this type as previously organized are provided with alwork support which is movable into and out of operative relation to themachine, the shoe beingldepressible against alight spring'until themachine starts, whereupon the shoe is held against movement bothdownwardly and outwa rdly of the machine. Such prior machines are alsoequipped with a wiper which moves over the shoe bottom to wipevthe upperat the rear end of the shoe against the shoe bottom, tacking means tosecure the upper in positionand a gripper co-operating with the wiper totension the upper `prior to the action of the wiper.

wardlyvto tension the upper and then downwardly and forwardly to laytheupper against the bottom ofthe shoe; yThe gripper having let go, thewiper and gripper move upwardly, rearwardly and downwardly` to normalposition.l Thegripper, being now open 'and lying just over the securedlupper, is in such a position that,` as the shoe is withdrawn, thesecured upper may catch on thegripper and `be torn loose, particularlysince the last raising spring has a tendency to raise the shoeduring'its movement y The wiper and grip-` per, after the upper isseized,first move upcatching on the gripper whenl the shoe is withdrawn.v`Preferably as shown herein, the wiper andv gripperv are raisedrelatively to the shoe and are restored to normal position for the neXtoperation as an incident to the removal lof the shoe from the machine.For thispurpose connections are provided between the shoe support andthe wiper to restore the wiper to normal position'when the work supportis moved away from the machine. Q v

Anotherfeature vof theinvention consists in means for causing thegripper to close.

after it has released the upper and is raised and moved rearwardly.v'Hencethe gripper is Iclosed as it passes rearwardly vover the wipedover and secured margin of the upper, and is caused, when loweredl just`as the machine stops, to. rest on the wiped over portionof the` upperwith its jawsat the` rear of the edge' of the inturned margin so thatythere is no tendency for it to catch on the secured portion of the upperwhen-the shoe -is withdrawn. This construction contributes to the samelresult as the feature rst above mentioned and, in fact, under certainconditions eitherof these constructions may be used without the otherwith advantage. V Of course'if bot-hrconstructions are provided thegripper 4will remain raisedas well as closed until the shoe iswithdrawn.

The machine of the Letters Patent above referred to `,is provided withtrackers to secure the flange of the counter at the corners of the heelseat.y It is desirable that the counter flange be forced downwardly flatagainstr the shoe vbott-oinprior to its bein secured in place.Accordinglypa feature o vthe invention 'consists in means associatedwith each yofthe flange tackers for forcing the counter flange againstthe shoe/bottom prior to its being secured in position. `As shown4herein, a presserfootfis secured to each of the tacker members and hasits pressing face located longitudinally of the shoe.

slightly forwardly yof t-he taclter andl in a.

plane below the nozzle or y-tack'ngersof the 'tackein Byv thisconstruction the tack ngers are prevented from. coming into actualcontact with the work andare hence free to open to-allow kpassage of thetack and driver. In the patent second above referred to, a. constructionis disclosed in which' the tackers are yieldingly pressed against thecounter y flange prior tothe insertion of the tacks. A feature lof"this'invention consists 'in means 'for effecting movement ofthe tackersto lia - adiacentto the heel seat` simultaneouslyr with the driving ofthe tack which holds the upper. and counter tothe innersole at the rearend of the heel seat, tacks also being driven through the counter flangeinside the upper at this time. A feature l'of the present inventionconsists in an organization for .operating the driverof the upper rearend tack after the driving of the tack into the margin of the counteradj acent to the crown of the 'last' and prior to the driving of thevertical tack intothe rea-r end of the heel seat and. also'- prior tothe drivingof the counter .flange tacks. Preferably the upper :rearendtack driver is operated when the action of the wiper is nearlyvcompleted yand vjust priorj to the descent ofthe pressers to force thecounterflange against the shoe bottom. The blow of the upper rear endtack driver isdelivered not only against the tack, if there isatack tobe driven, but

' `also against an abutment slide through tensionof the sidepressers,and means for' which the tackis driven. This blowacts therefore'to seatthe counter againstthe rearendof the last adjacent to the heel seat toassist the wiper in the wiping in lof the 'stock and to put the counterinbetter position for the action of the pressers and for the securingofthe parts by the tacks which are driven vertically after `the action ofthe pressers. Usually, of course, a tack is driven vby, the yupper rearend tack driver, but the blow is effective, as stated, whether or not itdrives a tack and in some instances the upper rear end ltack isunnecessary and undesirable-and-is hence omitted.` Other features of theinvention consist in `means for preventing the vertically driven .tacksfrom jumping back `into the delivery passages during rapid operation ofthe machine, improved v,means for adjusting the s varying thepositionlengthwise of vthe'shoe of the counter tacks relatively to the rearheelv seat tack.

These and other features of the invention, including` various novelconstructions and combinations of parts, will appear more fully from thefollowing description `when read in connection with the accompanyingdrawings and will be pended claims. i

pointedout in the ap- The novel construction and -arrangement machine,partly 1n section;

Fig.y 2 is a front elevation, partly'in section, of the counter tackermechanism;l

Fig. 3 isa detail view of partsy shown in Fig. 2; Y

Fig. 4 is a view, partly in section, of a friction pin for holding partsof the machine in place; A

Fig. 5 1s a view, partlyin section, of a modified formof the pin shownin 4;

Fig. `6 is a front elevation of the upper portion ofthe machine; t

Fig. 7 is a perspective view of a portion of the mechanismy foroperating the side pressers;v v

Fig. 8 is 'ardetail viewof parts shown in Fig. 6;

- Fig. 9 isa' detail view of parts shown in Fiom 8;

Fig. 10 isa sectional view of the 0Tipping, wiping and rear end` tackingme anisms;

Fig. 11 is a View in perspective yof the mechanism for lowering thecounter tackers;

Fig. '12 is a .view in perspective showing the counter tacker fingers;

Fig. 13 is a perspective view of the spring shown in Fig. 12;

Fig. 14 is a sectional view showing the gripperclosed and operated totension the ,uppers f y f `Fig.v 15 is aview similar to Fig. 14, showingthe operation of wiping in the upper;

Fig. 16 isa perspective view ofthe mechanism for holding the wiper inraised positiOn;

17 is a side elevationof parts shown in Fig. 16,* i

Fig. 18isr a perspective detail ofone of the driver cams; f

Fig. 19 is an exploded view, in perspective,

of one of the rear end tacker mechanisms;

Fig. 20 is a sectional view in assembled position of the `parts showniny Fig. 19;

Fig. 21 is plan view of the upper rear end tacker mechanism.; kand partsshown in Fig. 21.

The drawings represent a machine embodying the present invention which,except as to various mechanisms which are fully described herein, is ofa construction. similar to that disclosed in the Letters Patent to whichreferencehas been made above.

VThe numeral 2 (Fig. 1) indicates the frame of the machine head which issecured to a column 3. The slides or abutments of 22 and 23 aresectional details of .120

sol

anismsare indicatedrespectively by the nu= merals'4 and 6 andthereciprocating wiper carrier by the numeral 8, the latter' being mountedon a carrier 'slide 9 and having pivoted thereon 'a gripper member 7which co'-operates witlrthe wiper -to seize and `tension vthe upper.v4rEhe tacksfor thevarious tacking mechanisms, including the 'countertackers and the tacker which inserts'a tack in the rear end of the heelseat, to be described, are supplied from la tack pot l() by tackseparators located at 12 through suitable tubes, thetack drivers beingopcrk ated by cams on 'the main shaft 11.` Agdepressiblc jack post 14 islocked againstgoutward movement'. and against depression by the actionofa hook 16. Side pressers 18 and 20, which are operated byv springs 22,press against' the sides of the rear portion of the soleand are releasedby contact of the hook 16 with the arm 24 cfa bell crank lever, theother arm 25 of whichelfects movement ofthc'pressers an'ay from the shoeand places the springs under tension.

vThe jack post 14`isfyieldingly supported by a spring 26 andmechanism'lile that disclosed in my prior Letters Patent above mentionedis provided for depressing the Yjack post as itis swung linto themachine to insure that the jack, as it is swung about its pivot 13toward the machine with a.' shoe upon it, will bedepresse'd and Athenallowedjto rise so that the upstaudingmargin of the upper at the rearend o f the shoev is lowered while passing the gripper' `meniber '7, andis allowedto vrise when positioned vertically 'between the ywiper 8 andthe gripper 7.-, For this purpose the post 14 carriesl a latch. 28pivoted thereto by a screw 3() to turn in a clockwisedirection against aspring 32 and arranged to engage r camface 34 on anarm 36 lwhich isadjustably secured to the machine frame. When the jack y is swung towardthe machine the latch'28 engages the inclined cam face 34 ofthe arm 36and the post is depressed until the latch reaches lthe vertical portionof the camface,'where upon the postis raised by the spring 26. When vthepostpl4 and shoe'aie swung outwardly the latch 28' swings against thespring 32 to allow outward movement of the jack without depression. Whena shoe is mounted upon the post`14 and swung into the machine it willbedepressed by the mechanism described and allowed to rise so' thattheupstanding margin of the'upper will be positioned behind the gripper 7.'The gripper will then` rest on the fiange of the counter and asmovementof theshoe continues will move with the shoe against the light'pressureof a spring plunger 33 (Fig. 10)l which-holdsl it in norii'ial position.As the inward movement ofthe shoe continues the Arear end of the shoeladjacent to the crown `of* the'jlast 'engages'y a.Vfshaped face l` ofthe forward tacke'r slider 6A which lis mount# i ed to yield inwardly'untilpthe' rear endof. the shoe adjacent to the heel seat engagesthe-upper tacker slide 4, fwl'iereu'pon the slide 4 is moved toactuat'eallever 1T (Fig 1) and rcause a pawl 19 to lock the-lower tacler slidel6 against movement, mechanism for this pur-v pose being substantiallyasdisclosed sin. the' above-mentionedStewart patent. A startingtreadle 15is now depressed to start the machine, power being ythen `applied totheshaft i l1, rotation of which causes a cam '58 mount'- ed thereon topermit descent of the hook 16 which has an acting face to engage aroll39 on the work support, the facel beingl so con-l toured that thefarther the hookA descends the farther into the machine the 'work supvportwill be drawn. This construction, therefore, takes care of thevariation' in the lengths of lasts between the end of the last and thepin hole of the last and causes lasts of any length to be firmlyclamped'against thel automatically locked slideye. in (the priorconstruction the cam which controlled theaction of thezhooli was a dropor precipice cam which 'allowedl the hook to be forced down suddenlywith'a' severe shock which caused the hook, sometimes to rebound andrelease some of the rearwardpressure, and the hoolfwas actuated by atorsion spring vthe tension of which varied consid-k erably withthe-different .positions assumed by the hook y*because ofvariat'ions inthe lengths of lasts. in the present construction theV cam 38 iscontouredV to allowv gradual movement of the hook into position behindthe rollv 39 of the work support to applyv rearward pressure to thelshoe and lock the post 14 against depression. The rearendof thehook'vlever is vconnectedby a rod 40 to f one arm of an anglelever 42pivoted to the frame at 43 and having on its other arm a j roll 45whichrests 4on' thev cam 38.* l Along and powerful helical springl44(Figll) is 'connected between the rear end ot the hook `plied to theshoe irrespective of the amount the hook descends because of 'differentVsizes of lasts and the cam allows Jthe pressure 'to be appliedgradually without 'shocker sudden strain upon the shoe or machine partsand eliminates objectionable noise.y TWhen the hook descends a roll onthe arm 24'of the bell crank lever pivoted `at 23 yis released, allowingthe other arm 25 to free the armi 50 (Fig. which are tixed'to verticalshafts 52 by which the side pressers`18 andQO operated. i In theconstruction embodying the present invention improved mechanism' foradjusting the tension' ofthe springs 22 which operate the sidepressersis provided..k As .shown in Fig. 7, collars 54ar'e mounted oneon each y the` last.

of the shafts 52 to one of which the lower end of each spring is`secured. The lower faces of the collars 54j areprovided .with ratchetteeth which engage similar teeth on collars 55 fixed to the rockshafts52. lThe collars 54 have capstan holes for the insertion of an implementby which thel collars .may be turnedv to vary the tension Vof thesprings. The upper ends of the springs enage lugs 56 on` a frame 58secured to the ront of the column 3 and having journals. for the shafts52. .This construction affords means for accurately adjustingthe inwardpressure of each side presser independently.

As soon as the shoe has been positioned andheld as described by the hookand sidel pressers, a tack a (Fig. 15) is driven'through the lowerytacker slide G into the rear end vof, the shoe through the upper and themargin of the counter which isnext to the crown ofv The shoe is nowready to be operated upon by the gripper7 which is actuated by mechanismshown in Fig. 6. An angle lever 60 is pivoted at v62 to a bracket 64secured to the wiper carrier 8 aty 66 (Fig.

1). The rea-r arm of the lever 60 carries a roll 68 which rests. againsta cam face70 which is sufficiently wide tov allow the roll 68 to bemoved radially of the .cam by the forward movement ofthe carrier 8without its relation to the cam beingdisturbed The forward armV of thelever 60 lextends `transversely of the machine and carries `a screw72(Figs. 6 and 10) which engages the gripper 7 below itsl pivot 74. Abovethe pivot 74 of the gripper `7 is a screw 76 (Fig.

l10) vwhich engages the wiper carrier 8 and limits outward movement ofthe gripper .7,

Thev lever 60 is actuated 4by a pull spring 78 (Fig. 1) connectedbetween the lever60 and the bracket 64 and normallyunder tension so thatwhen the caIn'70 releases its inward pressure upon the rear arm of thelever 60 the spring 78 will swing the lever 16() in#Y wardly to causethe screw 72y to press inwardly upon the gripper member 7 and cause itslower end to force the upper against a co-operating face 79 on the.wiper 8 firmlyto'hold it (Fig. 14). The cooperating faces ofthe wiperand gripperare-preferably formed with interengaging angular formationswhich render their gripping acf tion substantially positive. Thisconstruction is more vfully disclosed vin Letters` Pata cam `path 83 ina cam block 84 on the shaft 11. The wiper carrier is yieldingly forceddownwardly by a'spring plunger 86 mounted-in the slide 9 and bearing onashelf 88 on the wiper carrier 8. The cam block 84 has a cam face onitsA periphery coacting with aroll 90 on a lever.92 pivoted .at 94 tothe frame and having on the end oppositev to the roll 90k a block 96pivotedto the lever and adapted to engage the lower face of the shelf 88on the wiper carrier 8 and to lift it when the roll 90. isk engaged by aperipheral projection on the cam block 84. -On f the cam block 84 aretwo such peripheral projections 98, 100, the latter having a. greaterextent peripherally of the cam block than the ,former j Referring toFigs.y 14 and 15, A seen that, after the gripper has closed and beforethe wiper begins to advance, the projee-tion 98 acts upon the lever 92,causing the block 96 to lift Athe wipe-r carrier and of course thegripper 7, thus effecting. anI upa" will bev ward pull on the uppervstock fromfthe point cent to the `heel seat to cause the counter tobefirmly 'seated against thelast and to drive a tack b at this point ifsuch a tack is desired. Afterk the f ull wiping movement of the wiperhasbeen effecteda tackc is driven through the wiper in the` usual mannerby a driverv bar 104 operated by a. driver lever.106' (Fig. 1) pivotedat 108 to the wiper slide 9 and .ope-rated by a cam 109 on the cam shaft11 of the machine which engages a roll 107 on the lever 106. Theprojection of the cam 84 acts toraise the wiperand hold itr out ofcontact with the shoe during the return movement ofthe wiper. j Y -K v YThe upper having been tensioned, wiped over and secured at the rear endof the heel yupper where it has `been secured and lcausing it to betornv loose. To this end a member seat, the cycle of the machine so faras the action of the parts now being considered is i 110 which isvertically stationary and hence the gripper is caused to turn on itspivot 7&1 yuntil it engages the wiper 'and is held closed until thewiper and gripper have been moved rearwardly soy that when tho camprojection 100 allows the wiper carrier 8 to descend-the gripper' willberearwardly beyond the edge of the secured upper and the shoe-may bewithdrawn. without liability of the. upper catching on the gripper'. y Y

Preferably, however, mechanism c is also provided inthe presentorganizationof the machine for maintaining theshoe and wiper invertically separated relation to avoid any possibility of the uppercatching on the gripper. As Vshown in F igs.I 16 and 17, on the forwardend o't the lever 92, which raises 4the wiper carrier 8, is adjustablysecured a block 118 by a boltr 117, a tongue andv groove `connectionbetween the lever and'blocl being provided topreventturning o1ther-block. Beneath theV block an angle lever is loosely pivoted at 11.6`on theinachine` frame and has'one arm 119 extending` upwardly.- andcarrying a latch plate' 120. Ag rod 122 passes freely through aforwardly exten-ding arm .1241; of the anglelever-and carries above thevarm a split clamp .collar126 threaded thereon for adjustment,` andbeneath'the arm earrics Yrespectively'fixed and loose collars 128 and130 between which is av spring 132.r -The lower end ofthe rod y122 ispivoted at13f1 to the work-'support above its pivot 13. `When the worksupport is swung toward themachine in presenting a shoe, an upwardthrust -s imparted tothe rod 122 lwhichacts through the spring 132 toswing the latch plate 120 against the forward face .of the block 118(Fig. 16),' the spring 1.32 then yielding duringthe remainder of themovement of the work support. vWehen the machine has operated and thelever has raised the wiper and lgripper awayfrom the shoe (Fig. 17) thelatch 120 snaps under the block 118 and prevents descent of the wiperand gripper when the machine stops.f vWith the work support in this.positionthe pivot 134, of the rod 122 is substantially over the pivot 13of the worlr support and hence during the first partof the outwardmovement of the work support substantially ne movement is impartedftoythe arm v124. This allows the shoe Atobe moved outwardly beyond anypossible contact with the gripper bei'ore'the later portion ot themovement of the work support acts to exert a downward pull on the rod122 sujf- .ticient to withdraw the latch plate 120 from beneath thebloclr 118 and allow the wiper and gripper to descend tov'normalposition for the next operation. t f Y i, i

vReferring. to F ig. 6, the. centraL tacker through which atackisdrivenbythe driver bar .104, as" described, to vsecure thewiped Vover upper,isindicated at 1,21. On each side of the vtaol er121 is la counter.tacker framef123, all three tacker arms. beingcarried, of course, bythe: wiper carr1er8. In

each frame 123 isaA drivervbar-125 carry'-l ling a driver 127 andvconnected at I,its upper f end tothe driver lever 106 whichis operatedby the driver camv v109.V VTack tubesf129 lead into the driverpassages.lat points'just below the normal lraised position 127 (Fig.

y3) of thelower end ofthe driverand are fed beforefthe :movement ofthewiperand gripper to updraw and overwipetheupper. These movementsofjthewiper take place very ,quickly when the machine--isfrunning at highspeed vandfit sometimes happensthat by this movement the tacks arebounced lback partly yinto the feed passages, and arev cut oii by thedrivers as-they descend immediate` This possibility isv avoided in .the`present `ly after .the upper is rtensioned. and wiped.

construction byl a formation ofthe "driver y cam 1,09 by whichthedriversarelowerediajr enough-tocover thejfeed openingsfinto the driverpassages, for example.l yto ther point 1' shown in fulllines (Figa)duringjthe rise andadvance of the wiper and are. then raised andreleased..v4 This is effected-by the depressed `portion .of the caml 109indicated at 131in Fig, 18.., Asjshowin the portion of lthe cam face y.which has no work to ,do is depressed andleftamfinish'edjor sake ofeconomy in manufacturingr the cam. This portionis indicated vat 133 AinFig. 18. Thel roll-107 ,of the driver lever is prevented @.05 l n fromreaching this .surface of .thelcamA `by the usual buffer washers whicharrest movement ofthedrivers and 'of .the lever 106. Each counter'tackerframe123 fis guidedl at ed for movement laterally'of the shoe 4orscription may now be confined to one-of the fits upper endjon itsdriverbar 125 for verltical .movementy andat its .lower end isguidcounter? tackers, it .being understood that the other is similar inconstruction but has its parts-m reversed. position. Thev tacker`frame123 at the right of Fig. 6 is embraced .by ya vmember .1136,(Fig.l.8) which has upward eXtensions137. lying at each. sideofthe taclerframe 123 to provide extended surface bearings. fortheframe. The tackerframe-123 has a slot 138to receive a roll 111 (Fig, 2) on a transversevbolt 1,39` which ment ofv the frame 123 relativelytot'he mem '125passesfthrouglr holes in the '..membervf186- This construction.permitsvert1cal,m0ve

ber'l, the frame being'held raised by a spring 140 connected between it'and the centml tacker-'121. To the outer end of `the member 136 issecured by a screw 142l a `vof the gripper.

ber 166 rest on vledges 170` formed onthe member 144y (Figa 8 and@ whichhas a boss 148 bored to forma long bearing tor the rod 13'5. The members136 and 144 are 'formed with tongue 'and groove connections, `as shown,toprevent relative turning of them yabout the screw 142 and themember144 is slotted at 146jto permit ythe tacker frame 123 to be" adjusted'forwardly and' rearwardly of thelslroe relatively lto the frame 121.

'The member 144 has ai downward yprojection having a tongue and ygrooveconnection with a roll carrier' 150 on which is mounted -a roll 152. Theroll "carrier is slotted `tonreceive a yscrew 154'by which' it is heldin `adjusted position on the projection 146. The roll 152 engages -a camface 1'5'6 (ll`ig.-111`)fornmxl on the side presser 20 which, duringmovement of "the" roll fforwardly over the shoe 'bott/om, causes thetacker to sli-de laterally 4on the rod 135k to position theitacker overthe "flange oi the Acounter inside the upwardly projecting margin of theupper. The roll l152 may be adjusted properly to position the tackerrel- -ativelyv to the width of the 'flange by loosening the screw 154and sliding the roll carrier. on the projection 145. f

To the lower :face of the tacker frame '123 (Figs. 2 and 6) is securedait-15811 presser member l having a downwardly and inwardly bent endportion 162 which 'forms 'a presser to engage the'flan'ge of thecounter. The presser is located in a plane slightly below tack fingers164, 165 (to-be described) between which a tack is driven, and enough inadvance of the fingers to allow openingy of the fingers by passage ofthe driverbetween them. "Both the tacker frames 123 are of courseprovided with pressers 162 Vwhich are pressed against ythe flan-ge toforce it against the shoe bottom prior to the driving of thecounter-tacks by thefollowing means, reference being madeV to Figs. 10and 11: A U-shaped member 166 is pivoted by holes' 168 on extensions ofthe ivot'74 Theinnercnds of t e meintacker iframes 1,23. Beneath thepivot 74 the member 166 has a projection 172 which is adapted to beengaged by the hea-d 174 ot a stud 176 (Fig. 10) secured to the'gripperoperating lever 66. When the gripper lever is moved outwardly by thepositive action ofthe cam face 70 to release the gripper, the' head 174engagesl the projection 172 kand turns the U-shaped member 166 on itspivot 74, causing its ends to act on the ledges of the' tacker framesand move them downwardly against the springs 140, thereby forcing thepressers 162 against the flange of the counter. This movement alsobrings the tack fingers 164, 165 into close proximity 'to the workwithout actually touching'it'; hence the separation of kthe tack"fingers is not interfered with by Contact with the work while thelingers are Yclose enough :to the work to avoid drivin a tack throughtheair for any material distance.

The lower end of each tacker vframe is. formed, as shown in Fig. 12,wit'h'a reduced rectangular portion178 which is embraced by lateralextensions l167 169 from the tackr fingers 164, 165, the inner faces ofthe lateral portions being lcut yaway 'to form a. space 180 to lit thereduced portion 178 of the tacker frame. The fingers are held'totially.half a revolution which brings the 'legs of the spring parallel,whereupon it can easily be pushed again into the position shown in Fig.12. Since the taclnngers lare held together onlyby the spring 1182, f.

'they lare free to rock when? the driver is forced between them .aboutthe'upper inner` corners 186l of the lateral projections. This :permitsmuch freer-passage of the tack and driver and produces much less wear`on the tack fingers than fa construction suclra's that disclosed in theAshton patent above mentioned, where the tack lingers. are constrainedto' separate in' parallel relation.

kVlhen the spring is removed the fingers are entirely unconnected andhence they can be assembled upon andfremoved from the machine With greatfacility v; particularlywhen the spring is arranged as shown with itslegs normally crossed, it can, vby manipulat- .ing it as described, beplaced in operative `relation to the fingers very easily.

' An improved construction ofthe end tacker mechanism is shown in Figs.19v to 23. The body or slide 4 of the upper rear tacker is mounted forsliding movement in the machine frame substantially horizontally and .ataclrer member 190 is pivotcd to the slide 4 by a pin 192, uniforml incross-section as shown in 22. In prior constructions the partcorresponding to the pin 192 is in the form of a bolt threaded into theslide 4. n

These bolts are frequently broken at the weakened threaded portion byreason of the continued vigorous impact therewith oi' the usualstopcollars on the driver bars, which blow is'transmitted as described tothe slide 4 and to the counter on the last which rests 1,671,430 j l i iagainst the V-shaped outer tace of the slide. They are also inconvenientto remove when it is necessary t'o take out one of the taclrer framesJfor inspection or renewal. 4In the present construction the pin 192 `isprovided with a flange 194 havingy a fiat upper face and an upwardlyflaring lower tace which, as the pin is pushed into position, engages abeveled upper tace ot' a spring latch 196,

'. the flange 194 acting to push the latch back until the latch snapsinto position with its flat lower face in contact with the flat upperface of the flange 194, thereby loclrin-gthe pin in position. vVVhen'itis desiredto re move thepin the latch 196 is pushedback by a handle 200and the pin pulled out byV its head 202. The pin 192 forms a pivot forthe tac-her trame 190 about which it may be adjusted to vary theposition of the 'tach relatively to the V-shapcdface of the slide 4,against which the shoe ispressed, and whichv acts to -centralize thevshoe laterally.A There isa laterally elongated slot 191' extendingthrough the V-shaped face oi the slide 4 through which the tack isdriven. This adjustment therefore varies the lposition of the tackrelatively -to the back seamk of the shoe and is effected by a screwA204 which is tlire'adedthrough a lug 205 on the taclier traine and'bears lagainst a face 206 ot the slide 4. A leaf spring 20S is securedat one end to the slide 4 and at its other end bears on the head of thescrew 204 to hold the screw yagainstthetace 206, the spring alsoengaging va groove'in the head'of the screw 204 to hold it 'from beingturned accidentally. Heretoliorethe tacktingers ot' the rear endtaclrers ofv this machine have been of very fragile construction and`'frequent breakage has resulted. In the present construction' tackfingers ot substantial construction Asimi-` lar in principle tothosedescribed for the counter tackers'are provided, asshown'particularly in Figs. 19 and 20. The forward end ol the tackertrame 190 is reduced'to torni a` tack nozzle 210 which extends be! tweentwotackftingers 212, 214 formed as iown in the eiploded view'of Fig. 19.The. tack fingers lhave lateral projections 216, 2118` whichare cut awayat 222 to embrace a lrectangularportion 224 of the tacker ltrame formedto receive '.tli'em. The projections 216,- 218'are positioned one onleach side ot the portion 224 and a spring 226 is applied with its endsin suitable grooves 288 inthe projections, there being depressions 230in the grooves to receive the inwardly bent ends of the springyieldingly to hold the spring in position. From Fig. 20 it will be seenthat the inner faces 219 ot the projections'216p 21S are beveled sovthat as the driver 232v forces a tach between them `they will turn onthe inner corners 234 of the projections.

aga-inst the action of thespring 226 and al'r low the tack and driver topass through. f Byv this construction of the tack lingers the tack isguided 'with Vcertainty and precision, breakage isavoided, and thengers'may be readily renewed when worn. The construction ot the lowerrear tacler mechanism 6 is substantially similar to thatot the upperrear taclrer mechanism just described, some or" the parts being reversedin position for separate caiiis on the shaft 11. the lower driver beingopera-ted early in-thecycle by a cain 236 `1) @and the upper driver 232being operated later and before the vertical tackers by a cam 238.'

In Fig. 4 is shown an improved 'form of friction pinpone-o'f which isutilized to hold a throat block 240 in front of the tack sepa-r rator 12(Fig. 1). in position, and another to hold the raceway cover-242 inplace, it

being desirable that these-pins shall rbe easily removed and insertedvto permit the Atack pas sages to bc clearedl `when'theyv becomecloggedfand for-separation ofthe tacks in: the raceways. The pin 250 isprovided with a nurled -head 252 at 'one' end -and at the other end hasa slot' 254 milled therein which yextends along one side Vot the pinaround thel 'end of the pin andalong the opposite side ot the pin, theslot forming a 4web 256. The web isprovidcd with a hole 258 and a spring260 is arrangedv inthe slot extendingfroni a point in' the slot nearth'ehole 258 atv one.

side of the pin around the end along the slot on the other side of thepin and having` its end -extending'thiough the'opening 258. 1

On opposite sides of the pin' the spring 260 is bent outwardlyso thatfor aport-ion of its length it lies' above the normal surface of this'portion ol the pin and hence comes into frictional contact with' thehole' in which the pin is .pushed and retains the pin i'rictionally inposition. ln Fig.'5 is shown a inodilication ol" thepin in which theentering end ot the pin is bored longitudinally at 262 and transverselyat 264. K Y 266 having a wedgeshaj'ied end and backed up by a'y spring26S ,is located in the longitudinal bore 262 and a transverse plunger270 is located inthe transverse hole 264` said plungerhaving a tl-shapednotch'lwhich' is engaged by the wedge end ofthe plunger 266. gThe'plunger 270 has a roundediend which' entends on one side ot the pinbeyond Ithe normal suriiace o'l the pin,"a.nd as the pin is'pushed intoits` hole the plunger 270 will be'- moved transversely 4oit the pin Aplunger against the ressure of the alune'er 266 .e P .i

which will maintain outward pressure oit'` the plunger 270 and hold itiii irijctioiial contact with the hole to retain the kpin frictionally`in position.` p 1 Having thus described my invention,

what I claim as new and desire to securev vice there is relativemovement olf approach` 'v andseparation. means for relatively actuatingthe `gripping device and the support to tension the upper over the last,means for securing the upper, means for maintaining a space between thegripper and shoe bottom prior to the movement ot' separation of thesupport and gripping'device, and means operatedv by .such movement ofseparation to restore the parts to initial position.'

2. In a machine of the class described, the combination of wiping means,means to seize the upstanding margin of the upper at the heel portionot'a shoe and to .tension it over the shoe bottom, means for securing thetensioned upper, means for .maintaining the fseizing means out ot theway of theA shoe during withdrawal ot the shoe to prevent the securedupper from beingl torn loose by contact with the seizing` means,andlmeans operated by withdrawal of the shoe to restore the seizingmeans to initial position.

- 3.v In a machine of the class described. the combination of means 'forworking over and vsecuring in assembled relation upon a last the`upstanding margin of an upper at the heel portion thereof,means formaintaining the overworking means out of contacting relation with theoverworked upper during withdrawal ol the shoe, and means operating asan incident to such withdrawal to restore the overworking means toinitial position. 'i

4. In a machine for working an upper over a last, the combination ot awiper, .a work support movable toward and fromthe wiper parallel to itsplane of operation, means to impart yto the wiper a wiping andy alifting movement, means to hold thewiper lifted, an-d means operated bymovement of Vthe work'support to restore the ywiper to wiping position.

5. In a machine of the classdescribed, the combination of a wiper. means"for advancing and lifting the wiper, means for supporting the wiper inraised position, a work support movable toward and from the wiper, andoperative connections between the work support and the wiper forreleasing the wiper supporting ineansby movement or' the work supportaway from the.

wiper. y i

'6. In a machine ofthe class described, the combination of a wipermovable over a shoe bottom, means for operating the wiper to wipe theupper over the shoe bottom and then raise it away from the shoe bottom,a latch to hold the wiper in raised position, a shoe support movabletoward and from the wiper, and connections between the shoe support andthe latch to 4release-thelatch when the work support is moved away fromlthe wiper.V y i 7. In a machine of the class described, the combinationot a wiper,fmeans flor advancing and raising the wiper, a work supportmovable towardand from thewiperE means to khold theiviper in raisedposition, andmeans controlled by the work support for releasing theholding means.

I 8.` In a machine of the class described,y the combination of'a wiperfor wiping an upper over a. last;` la gripper, means tor operating saidwiper and gripper tor tension and lay into wiped vposition a portion ofthe upperA and move awayffrom the upper, means :for

securing the upper after it is wiped, a work support, means to hold thegripper away from the upper, and connections kbetween the gripper andthe work support to release the gripper uponymovement of the worksuport. p 9. In a machine of the class described, the combination of agripping device, a shoe support movable into and out ofoperativerelation to the gripping device, means Jfor operating .the grippingdevice to tension the upperfover a shoe `on the support and for raisingthe gripper, means for securing -the upper, means for maintaining thegripper away from the shoe bottom, and means operated by movement of theshoe kSupport out of operative relation to the lgripper to restore theparts to initial position. g i, y l0. In a machine of theclassdescribed, the combination of a gripper, means for advancing and lifting`the gripper, means for supporting the gripper in raised position, a

work support movable toward. and` from thev gripper, and operativeconnections between the work support and the gripper for releasing thegripper supporting means by movementgof the work support away from thegripper. n

11. In a. machine of the class described, the combination of a grippermovable over a shoe bottom, means for operatingthe gripper to tensionthe upperl over the shoe bottom and then raise it away'froin the shoebottom, a latch to hold the gripper in raised position, la shoe supportmovable toward and from the gripper, and connections between the shoesupport and the latch to releasethe latch when the work .support ismoved away` fromthe gripper.

12.In avmachine ofthe class described,

the combination yof agripper, means for advancing and` raising thegripper, a'worlr support movable toward and from the gripper,

means vto hold the gripper in raised position,` `and means controlledby'thevwork support for releasing the holding means.

13. AIn a machine of the class described,

the combination of means for working an ile upper over a last includinga wiper andl gripper, means for operating said overworking means'totension into wiped position av por- Vtion of the upper and move awayJfrom the upper, means for securing the upper after it is wiped, a worksupport, means to hold the mier-working means away trom the upper,andconiiections to the work support to release the over-working means bymovement of the work support.

14. A machine of the class described having, in combination, a shoesupport'iiiovable toward and from the machine and movable vertically, agripper relatively vto which the ,'shoe is positioned with the. gripper`jaw against the shoe bottom, means for operatl ing the gripper totension the upper and lay it against the shoe botto'm,`means forsecuring the upper, andmeans for relatively oper-` ating the gripper andshoe support to prevent the secured upper `from catching on the gripperwhen the support is v,moved out of the machine.v 1

. 15. In a machine for assembling upon a lastfpreparatoryl to lasting,the combination of a carriei` movable over the last.

` withdrawn.

16. Ina machine of the class described, the combination of a wiper forwiping portions of anvupper over a last, a gripper cooperating with thewiper to tensionthe upper and open after its tensioningl action, meansfor seeuringthe wiped over upper, and means for closing the gripperafter 'the securing operation to prevent the gripper from catching onthe upper and tearing it loose when theshoe is withdrawn.

17. In a machine of the class described, the combination of a combinedwiper and gripper, means acting to cause the' gripper to seize the upperand to release it after it has been carried over the shoe bottom, meansoperating to lift the wiper and gripper to tension the upper, then tolower the wiper and gripper and carry the stock over the shoe bottom,means to securetheiipper while the wiper is in contact with the shoe,and

means to close the gripper again to'prevent the secured upper fromcatching on the gripper when the shoe is withdrawn after the upper hasbeen secured. f

18. In a machine et the cla-ss described, the combination of shoelholding means, means to seize and tension fthe upper,

means for causing said seizingV means to carry the seized upper overuponthe shoe'- an appenbottom, means to secure the upper in place,

means` for releasing the seizingmeans l'and raising it above the shoe,means to close the seizing means after it is raised, means to releasethe shoe, and means to restore the yseizing means to normal upperseizing position.`

19. In a machine ot" tlieclass described,

Vthe combination of means to seize the up`- standing margin ofthe upperat the heel portion of a shoe and totension itover the shoe bottoni,means for securing the tensioned upper, means 'orinoving the vseizingmeans away vfrom proximity tothe upper, y "and means actingautomatically to prevent the secured upper from' being torn loose bycontact with the seizing meansv when `the shoe vis withdrawnfrom'themachine.

0. In a. `machine oic ythe vclass described, the combination oi' meansfor woikingjove'i' and securing vvin assembled, relationv upon va lastthe upstaiidinginaigin of an upper at the heel portion thereof,meansffor lifting and maintaining the overworking means' out ofcontacting relation with tlieoverwoifked upper during withdrawal oftheshoe from proximity to the overworking means, .and

means acting thereafter to restore'the overworking means to workingposition.

aul

21. Amachineof the class described hav# d ing, in con'ibination, a shoesupport mov@V able toward andy from the machine, agrippei' relatively/towhich the shoe isrpo'sitioiied with the gripper aw. against the shoebottom, means independent of movement of the'shoe support for operatingthe gripper the gripper and shoe support to preventthe Vsecured upperfrom catching on the gripper when the support is moved away -grom themachine.y f Y r 22. In a machine for assembling an upper upon a lastpreparatory to lasting, the combination of a carrier movable over lthelast u. and movable vertically, a wiper on the carrier, a grippermounted on the carrier-and gripper operating means, co-operating 'with`the wiper to cause the gripper to seize a portion of the upper and layit over the last bottom, release it and -move away from the last bottom,means for securingvtheupper after treatment bythe vgripper and wiper,

and means t'o close the gripper when it isk raised to prevent the vupperfrom catching on the gripper when the'shoe is withdrawn.

23. In ya machine ofthe class described, the combination oii'a" wiper,means for operlatingthe wiper to cause it to Wipe portions of an upperover alast, then rise and returnk wiped over upper,andmeansgfor.closingthe l -to tension the upper and lay it against vthe.shoe bottom, means 'for securing Athe upper, and power means forrelatively operating ics isc

gripper during the return movement or the Wiper to preventthe gripperfrom catching on the upper and tearing it loose.

24. n ainachine of the class described, thecombination of a combinedwiper and gripper', m'eansacting to cause the gripper to seize the upperand later to release it, means acting to liftthe Wiper and gripper totension the upper, then to lovver the Wiper and grip er while carryingthe stock over the shoe ottoni, -then raise the gripper and retract itafter' the upper has been released, mea-ns to secure thek upper Whilevthe Wiper isl inv contact with tlie'shoe, and means to close theVgripper again during its retracting movement to prevent the securedupper from catching on the gripper when the shoe isl Withdrawn after theupper has been secured.

25. In a machineot the class described,

the combination of shoe holding means, means to seize and tension theupper in a plaine perpendicular to the last bottom,

means forV giving said seizing means an orbital path of moven'ient tovcause said seizingmeans to carry the seized upper over upon theshoebottom and return out of contact with the shoe bottom, means to securethe upper in place, means for releasing the seizing means L after itstensioning action, means to close thesei'zing means during its returnmovement to normal position, andy Vmeans to release the shoe.

261A machine forassemblingfand secur- ,ing inrassem'bled relation theupper of a shoe upon a ylast preparatory to lasting, hav- `inggincombination, ai combinedvviper and `ripper operating to seize, tensionand overay a 'portion of the upperfover the' last bottom, means tosecure the upper in overlaid position, means to lift and retract theWiper after its function iscon'ipleted, and

mea-ns for causing the gripper to close durrise andreturnto-initialposition, an odset Varm onthe gripper, and a relatively fixedarm to engage the 'offset arm and cause the gripper to close during theretracting movement of the gripper so that the gripper, When it reachesinitialv position, will be rearwardly beyond` the edge of the portionssecured and the shoe may, be Withdrawn Without catching the securedupper upon the gripper.

shoe bottom adjacent to the tacliers fLern-iso 28. VIn a machine of theclass described, the combination of a tacker arrangedr for movement overthe shoe bottom in a; position spaced above the shoe bottom and movabletoward the shoe bottom, exposed tack ngers on the tacker, and meanscarried by the ta'cker for engaging the work as the tacker moves towardthe shoe bottomto avoid actual contact oiPA the tack lingers Withtlieivork` and to 'leave the tack fingers tree to be separated bypassage of the tack and ydriver between them.

` 29. A machine for securing parts of boots y'and shoes in assembled`relation upon a last preliminary to lasting, having, in combination',means'foi" holding.V an upper and last in assembled relation, tackingmeans', means for moving the last and tacking means relativelyA tovposition the tacking means over the heel seat, means acting inconsequence of said"rel'ative movement to position the tackers insidethe upper and over the coun-v Vter flange, and means for pressing thecounter `flangeagainst the shoe bottom priorto 'the action of thetackers.

,y 30'. -A machine toi-securing parts-of boots audshoes in assembledrelation upon ak-last prelin'iinary7 to lasting, having in conibination,tackers, means `for relatively movingthe tackersV and shoe to positionthe enL noy

tackers over the shoe bottom, meanstor laterally moving thetackersoutwardly relatively toja point between them to position them atpredetermined distances 'trom the last edge, and means arranged to pressupon the shoe bottom and prevent actual ,Contact of the tackers` withvthe shoe bottom.

A machine for securing parts of boots and shoes in assembled relationupon alast preparatory to lasting, having, in gco-iiibination, tackerspositionedr at the rear oi the shoe comprising tack hold-ing means,means for `l`moving the shoe and Atackers relatively v`to position thetackers over` the shoe bottom out of Contact therewith, means tor movingthe tackers toward the 'shoabotton'n s and means acting tov presspositively against. the l l prior to the insertion of the tacks. j j 32.A machine-.tor securingparts ot boots and shoes in assembled relationlupon a last preliminary to lasting, having, in combination, tackers,means vfor 'relativelv moviiig thetackers and shoe in they direction .ofthe longitudinal median line oi an endet the shoe to position thetackers over the, slice bottom, means operating during suoli tmovementfor separating the tackers to position them at predetermined distances'from cp-` posite side edges oi the last, and means airanged to press theshoe material against thev last boitomvprior to the action of thetackers in securing .the material. y

33. In a machine of the class described, the combination of a gripper,tackeis mov- 36. In the combination of a tacker arrangedgfor able overthe shoe bottomy out of contact therewith, and means operated by opening'movement of the gripper for causing-the tackers to move toward thework.

34. In aymachine of the class described, the combination of a tackerarranged for movement over a shoe bottom out of contact therewith andmovable into contact with vthe 'shoe bottom, a" gripper mechanism, andmeans operatedA by the gripper mechanism l for moving the tackertowardtheslioetbottom prior to the tacking operation.

35. In a machine of the class described, the combination of a gripper,'means for operating the gripper, tackers `movable over the shoe bottomout of 'Contact therewith, and

connections between vthe tackers :and the 'gripper voperating means. forcausing-the tackers to move into substantial contact with the work'prior to lthe tackfdriving operay tion. e f

a. machine of the class described,

movement over a shoe bottom out of contact therewith :and movable intocontact with the shoe bottom, a gripper, means-for operating A,thegripper, and means operated byi the gripf per operating means for movingthe tacker "positively into substantial Contact with the shoe bottomprior to the tacking operation. '37. A machine-'for secu'ringthe paitsof boots and shoes in assembled relation upon a last preliminary tolasting` having, in combination, tackers positioned at the rear or` ashoe comprising tack holding fingers and 'tack driver-s` means forlmoving the tackers and shoe relatively to position the tackers over theshoe bottom out ot'contactthere- 'with, and means tor positively movingthe tackers toward the shoel bottom.-

38.l A machine for securing parts ot-boots and shoes in assembledrelation upon a last preparatory to lastingQhaving, incombination,`tackers positioned at the rear ofthe shoe comprisingexposed'tack holding iingers and tack dri.vers,'means for moving thetackers and shoe relatively to `position the "tackers over the shoebottom "out of contact therewith, means for'moving the tackers towardthe shoe bottom, and means in advance of the tackers to'enga'gethe shoebottomand prevent actual contact of' the tack ingers with the shoebottom so that the tackfingers are free to separate when the tackisdriven.

39. A machine for securing parts of boots and shoes'in assembledrelation upon a last preparatory to lasting, having, in combination, agripper, yoperating meanstherefor,

tackers positioned at the Irear of the shoe comprising tack holdingmeans, means for moving the tackers to`position the tackers over theshoe bottom outy of contact -there- ,i with, -andv means operated byVthe grippe-r voperating ,means to move the 'tively toward the work'.`

tackers posi- 40. Ian-a machine for assembling parts of boots and Ishoesupon their lasts preparatory to lasting, the combination of means 'forexerting. substantially positive pressure upon the rear end ot a shoeadjacent to the edge of the counter nearest the crown ot' the last,

means forwiping the upper over the heel seat, means for delivering ablow upon the rear end of the shoe adjacent to the heel seat to seatthe-counter against the end of lthe last aty that point, and means`t'orthereafter securing `the 'wiped lover upper to the heel seat.'

fr 4l.l In a machine for assembling partsof boots and shoes upon theirlasts preparatory to .lasting, the combination of means for exertingsubstantially positive pressure upon the rear end ofthe shoe adjacent tothe edge lofthe counter nearest the lcrown of thelast,

means forwiping the upper over the heel seat,'means for securing theupper to the rear end of the `last adjacent to the heel seat, means`acting-simultaneously by impact to seat the 'counter against the last,and means for thereatter'securing the wiped over ,up-

per to the heel seat.v

1 42. In a. machinefor assemblingparts-or y boots and'shoes upon theirlasts preparatory :to lasting` the combinationof means forv se-Acuring.A the 4upper and counter ytothe rear end of thelast adjacentV tothe edgeot1 the counter most distantfrom the last bottom,

means for tensioning the: upper upwardly :trom the point secured andwiping it over the heel seat of the last, means for delivering a blowtothe rear end ofthe shoe adjacent to the heel `seat to seat the counteragainst the last, and'means for thereafter securing the counter andupper to the' innersole.

`45. In a machine for assembling parts of boots and slices upon theirlasts preparatory to lasting, fthe combination of meansjtor securing theupper 4and -countergto the rear end of the last/adjacent tothe edge ofthe l yover upper and counter to the innersole.

44. In a machinefor assembling parts of boots and shoesupon their lastspreparatory 4to rlastingytlic' combination of means torsecuring theupper and counter to the` rear' end of .the last adjacent to the edge of.the counter most distant from the last bottom,"means 'for tensioningthe upper upwardlv from the point secured and wiping it 'over the heelscat or the last,`means fori driving a tack in .the counter of theslioeat the rear end of the heel'seat and at'the'same time exerting anoutward thrust upon the counter to seat it against the last, and mea-ns.for thereafter securing the upperv and enunter tothe infnzersolef`elif.1 In' a .machiney ot the classdescribed,

Inessufre to be applied: gradualdvy 4'6. vIn a machineof ltlie classdescribed,

Lthe combinati-on with: upper wiping rand securing. means, an abutmenttor theshoe,aind af'shoe suppiort,r ot' a membeirhaviiig a vcani faceacting on the shoe S-upportto press'the shoe against the'.v abutment andto ydraw Vthe fslioesupport intel the machine dillerent distances.accordingto tlf'ielength ofthe last and 'to liocld'ithef supp-ortpositively against 1 outward movement, means tor applying to the cam'member substantiallyconstant actuating' iioree, andi means r'forcausing. said force to' `be 'applied 1 gradually.

ffl?. In a machine of theV class described,

the combination with-upper wiping vand securing means Vand a slicesupport, ol? a hook having' a cam-shaped face acting on the shoe supportto draw .the shoe' support into the inachinc dill'crent distancesaccording to the positionotthe hook, and to hold the supporti'iositively against outward movement,

a long helical spring for'applying to the hook substantially const-antpressure. irrespectivelyoitthe positionof the hook, and a poweroperatedslowY acting carni for control- 'linq the action off the sirinfr tocause `sai'dv e: n

springt-o act gradually.

` A machine for securing` parts of boots and Ashoes in assembledrelation upon a last `preparato ry to lasting, having, incom-bination`r` presser's arranged to engage the sides o'l the rear partof a shoe, springs for operating' the presscrs,and means for adjustingthe rtension of each-of the springs comprisinga collar 'havingconnection Witli'one v presser 'and' a second collar connected tothespring, said collars having interengaging ratchet teeth on theiradiacent faces.

49. A machine for securing parts of boots and shoes in assembledrelation upon a last preparatory to lasting, having, in combina# tion, apresser arranged to engage the side of the rear part of at shoe, acollar having connection with the presser, a secondcollar, a springconnected to the second collar, and interengaging teeth on the adjacentfaces of vthe collars so'that the tension of the spring may be varied byturning the second collar relatively to the first.A

A. mach-ine for securingparts of bootsv and. shoes in'. assembledrelation` upon a last preparatory to lasting,l having, in combina-`tion, rock shafts carrying pressers :tor engaging. opposite sides of therear part of a shoe, torsion springs o n said shaftsvanchored at one endto a frame, loose collarsonthe shafts connected to the oppositeends olf.the springs, collars fixedon the shafts adjacent to the loose collars,and interengaging ratchet teethfonthe adjacent faces of the collars sothat the tension oft-he springs may be adjzustedby relative rotation ofthe fixed' and loose ycollars.

h A machine for securing parts of boots,` and shoes inassembledifelation upona last preparatory toflasting, having, incombination, a heel seat tackerv and counterflange tackers movabletogether from \a position atk ythe rearoff the shoe lengthwise oftheshoef.

into tacking position, and means arranged for adjustment to vary theposition of `the flange rtankers relatively to.y the vheel seat tackerlengthwisewoi.the shoe.-4

and shoes in assembled ,relationupon a last preliminary to last-ing,having, in combination, means. for hold-ing an uppe1' and last inassembled. relation, stacker for inserting a tack atth'e rear-vendoiz'the heel seat-to `secure the upper andy c 0unterto,.the innersole,counter lange ltackers, ineansfornioving the lastan'd tackers relativelyto position the .tackers over the heel seat,vmea ns acting inconsequenceof said relative movement .to

position the. counter flange tackers inside' the upper and overthecounter flange, and means permitting adjustment of the cot-interflange tackers lengthwise of the shoe relatively `to the'heel seattackenv y Ina machine'for assembling parts of boots and shoes -upontheir lasts preparatory yto lasting, the combination of a tacker in-Lcluding a driver and tack throat movable upwardly and over. the shoefbottom and downwardly Iinto t'acking position, means for lowering `thetack driver' to hold a ted tack in the tack throat duri-ng said movementof the tacker, and means for then raising and releasing the driver todrive the tack.fy

,572.1 A machine for securing parts, .olf boots' 54. In a machineforiassembling parts of boots and shoes upon-their lasts'preparatoryVtol lasting, the combination of a tacker including: a tack passage, yadriver and tack .lingersy means for vfeeding a Vtack to be re-` tainedbythe fingers, means for moving the tacker upwardly over` they shoebottom and down vupon. it, means-i`or preventing the tack Vfromvbouncing back into the :tack passage during such `movement of thetaillier, and

means for dri'ving'the tackafter movement of the tacker is completed.

5:5. Ina machine for assembling'V-partszof boots and shoes upon theirlasts preparatory to lasting, the combination ofi shoeholding means,`aslide to contact with the rear end of the shoe, a tacker, including adriver bar, pivoted to'said slide, and a pivot pin for the tack'erhaving its pivot portion uniform in cross-section and constructed andarranged to withstand the continual impact of the driver bar transmittedthrough said pin to the slide.

56. In a machine for assembling parts of boots and shoes upon theirlasts preparatory to lasting, having, in combination, an abutmentslidefor the shoe, a tacker pivoted to said slide for adjustment of theposition of the tack relatively to the slide, a. pivot pin forming saidpivot, said pin having a flanged head and 'being formed With itsl pivotportion uniform in cross-section, a latch engaging said flange to holdthe pin in place v and permitting the pin when released to be removedWithout rotation, and a` driver bar in the tacker the impact of Which isreceived by the tacker and transmitted through said pin to the abutmentslide.-

In testimony whereof I have signed my name to this specification.NORWOOD H. KNOWLTON.

